ambassador chris stevens and three other americans. this week the state department ordered an investigation into the attack by an independent panel. >>> more seat repairs could have your american airlines flight cancelled today. the airline announced yesterday that they would again ground 48 planes to make more repairs to seats that could come loose midflight. that caused 50 flights to be cancelled yesterday, and another 44 will be cancelled today. initially, a faulty clamp was blamed for the problems. but now american says a combination of wear, poor design, and even spilled soda caused pins to come loose in the seats. all planes should be back in service by tomorrow. >>> tomorrow two men will square off in a debate that will help shape the direction of our country. tongue in cheek, i should say. neither one of those men running for president. jon stewart and bill o'reilly will face off in the rumble in the air conditioned auditorium. the two say they hope to take an entertaining and comedic approach to the pressing political issues i